ACRI-Group, private company, created in Sophia-Antipolis in 1989, present in France (Sophia antipolis, Toulouse, Paris, Brest) Morocco, Canada and UK through its subsidiaries ACRI-ST, ACRI-IN, ACRI-EC, ARCTUS & ARGANS. ACRI-Group is specialised in earth sciences, hydraulic and fluid mechanics. A wave and current tank allows to perform simulations and tests. More than 90 researchers, engineers, technicians work in this group for public and private project owners on plans linked to land planning, environment and natural risks. In ACRI-ST, more specialised in earth sciences, all the techniques of observation (in-situ and satellite), numerical modelling (simulators and chains of algorithmic processing), and physical modelling (models) are exploited. We participate in numerous national and European research programs in narrow collaboration with key laboratories of the National Centre for Scientific Research (CNRS) or from Europe.